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FIELD  MUSEUM  OF  NATURAL  HISTORY 

PUBLICATION  246 
ZOOLOGICAL  SERIES  VOL.  XIV,  No.  4 


CONTENTS 

TO 

VOLUME  XIV 

NUMBERS  I   tO  3 


WILFRED  H.  OSGOOD 

Curator,  Department  of  Zoology 

EDITOR 

THE  LIBRARY  OF  THE 

ONIVERSITYQFILLINOIS 


CHICAGO,  U.  S.  A. 

1928 

Natural  History  Library 


PUBLICATIONS 


OF 


FIELD  MUSEUM  OF  NATURAL 
HISTORY 


ZOOLOGICAL  SERIES 
VOLUME  XIV 


\      NATURAL 
HISTORY 


THE  UBMKY  OF  THE 

FEB141938 
ownrERsmr  OF  ILLINOIS 
CHICAGO,  U.  S.  A. 

1921-  1925 


FIELD  MUSEUM  OF  NATURAL  HISTORY 

PUBLICATION  246 
ZOOLOGICAL  SERIES  VOL.  XIV,  No.  4 


CONTENTS 

TO 

VOLUME  XIV 

NUMBERS  I  to  3 


WILFRED  H.  OSGOOD 

Curator,  Department  of  Zoology 

EDITOR 


CHICAGO,  U.  S.  A. 
1928 


FT 
v.  I- 


CONTENTS 


A  Monographic  Study  of  the  American  Marsupial,  Caenolestes.    By 

Wilfred  H.  Osgood 1-156 

The  Brain  of  Caenolestes  obscurus.   By  C.  Judson  Herrick 157-162 

Review  of  Living  Caenolestids  with  Description  of  a  New  Genus  from 

Chile.   By  Wilfred  H.  Osgood 163-172 

The  Brains  of  the  South  American  Marsupials  Caenolestes  and  Orolestes. 

By  Jeannette  Brown  Obenchain 173-232 


LIST  OF  ILLUSTRATIONS 


PLATES 

I.  Caenolestes  obscurus. 

II.  External  characters. 

III.  General  musculature  after  removal  of  superficial  fascia. 

IV.  Muscles  and  glands  of  the  head  and  neck. 
V.  Muscles  of  the  legs. 

VI.  Muscles  of  throat  and  inner  side  of  thigh. 

VII.  Parts  of  alimentary  system. 

VIII.  Reproductive  organs. 

IX.  Dissections  of  male  organs. 

X.  Parts  of  reproductive,  alimentary  and  respiratory  systems. 

XI.  Cervical  vertebrae. 

XII.  Bones  of  sternum,  hind  leg  and  thoracic  region. 

XIII.  Scapula,  pelvis  and  lumbar  vertebrae. 

XIV.  Sacral  and  caudal  vertebrae. 
XV.  Humerus,  ulna  and  radius. 

XVI.     Manus  and  pes. 
XVII.     Longitudinal  section  of  skull. 
XVIII.     Dentition  and  hard  palate. 
XIX.     Fig.  I.     Mounted  skeleton  of  Nesogale  dobsoni. 

Fig.  2.     Mounted  skeleton  of  Caenolestes  obscurus. 
XX.     Skull  of  Caenolestes. 
XXI.     Dorsal  and  lateral  surfaces  of  brain. 
XXII.     Ventral  view  of  brain. 

XXIII.  Figs.  I,  la,  ib.     Skull  of  Caenolestes  obscurus. 
Figs.  2,  2a,  2b.     Skull  of  Orolestes  inca. 

Figs.  3,  3a,  3b,  30.     Skull  of  Rhyncholestes  raphanurus. 

XXIV.  Orolestes  inca.     Dorsal  view  of  brain. 
XXV.    Orolestes  inca.     Ventral  view  of  brain. 

XXVI.     Orolestes   inca.     Fig.    3.     Lateral   view   of   brain.     Fig.   4.     Median 

section  of  brain. 
XXVII.     Median    surface   of   hemisphere.     Fig.    5.     Orolestes    inca.     Fig.    6. 

Caenolestes  obscurus. 
XXVIII.     Figs.  7-10.    Cerebella  of  Caenolestes,   Notoryctes  and  Perameles.     Fig. 

II.     Development  of  mammalian  "hippocampal  figure." 
XXIX.     Figs.     12-15.     Reconstructions   of   hemispheres.     Fig.    16.     Ventral 

diverticulum-of  recessus  superior. 
XXX.     Fig.    17.     Dissected   diagram  of  hippocampus  of    Caenolestes.  Fig. 

1 8.     Temporal  hippocampus  of  Didelphis. 
XXXI.     Temporal  recurving  of  hippocampus.     Fig.  19.     Hypsiprymnus.     Fig. 

20.     Rabbit.     Fig.  21.     Felis  leo.     Fig.  22.      Notoryctes. 
XXXII.    Transverse  sections  of  brain  of  Caenolestes. 

XXXIII.  Transverse  sections  of  brain  of  Caenolesles. 

XXXIV.  Transverse  sections  of  brain  of  Caenolestes. 
XXXV.     Transverse  sections  of  brain  of  Caenolestes. 

XXXVI.     Transverse  sections  of  brain  of  Caenolestes. 


Records  of  Caenolestes  and  Orolestes. 


MAP 


vii 


Page  1 6 


INDEX 


Names  of  new  family,  genus  and  species  are  printed  in  bold-faced  type. 


Abductor  caudae  externus 38 

Abductor  digiti  indicis 47 

Abductor  digiti  minimi 47 

Abductor  pollicis 47 

Abductor  pollicis  longus 44 

Abductors 46-4? 

Aberrant  bundle 200 

Accessory  olfactory  bulb 189 

Accessory  olfactory  nucleus 194 

Acromio-deltoideus 40 

Acromio-trapezius 24 

Adductor  brevis 48 

Adductor  longus 47 

Adductor  magnus 47 

Adductors 46-57 

Alimentary  Canal 69 

Amygdaloid  complex 185-201 

Anconeus. 42 

Anterior  olfactory  nucleus 191 

Arm 89 

Auditory  ossicles 107 

Auriculo-occipitalis 23 

Biceps  brachii 41 

Biceps  f emoris 49 

Biventer  cervicis 25 

Brachialis  anticus 41 

Brachioradialis  (Supinator  longus). .44 

Braincase 99 

Brain  stem 1 60 

Buccinator 31 

Canines 1 1 8 

Caudal  vertebrae 84 

Caudofemoralis 48 

Cerebellum 159-186 

Cerebral  hemispheres 158 

Cervical  vertebrae 77 

Cervico-auricularis 23 

Choriod  fissure 185 

Circulatory  System 77 

Claustrum 221 

Cleido-mastoideus 33 

Cleido-occipitalis 34 

Complexus 25 

Coracobrachialis  brevis 41 

Cremaster 35 

Dentition 1 1 1 

Digastricus 32 

Diprotodonty 128 

Distribution 15 

Dorso-cuticularis 23 


Epitrochlearis 40 

Ethmoid 101 

Extensor  brevis  digitorum 54 

Extensor  carpi  radialis  brevis 44 

Extensor  carpi  radialis  longus 44 

Extensor  carpi  ulnaris 45 

Extensor  caudae  lateralis 39 

Extensor  digitorum  communis 45 

Extensor  digitorum  lateralis 45 

Extensor  hallucis  longus 55 

Extensor  indicis 46 

Extensor  longus  digitorum 55 

External  Characters 19 

Fasciculus  aberrans 200 

Femoro-coccygeus 48 

Fimbrio-alvear  fissure 184 

Fimbrio-dentate  fissure 184 

Fissura  amygdaloidea 181 

Fissura  rhinalis  arcuata 179 

Flexor  accessories 52 

Flexor  carpi  radialis 42 

Flexor  carpi  ulnaris 42 

Flexor  digitorum  fibularis 51 

Flexor  digitorum  profundus. ..... .43 

Flexor  digitorum  sublimis 43 

Flexor  digitorum  tibialis 52 

Flexors 46 

Foot 95 

Forearm 89 

Frontals 103 

Gastrocnemius ' 50 

Gemelli 37 

Genioglossus 33 

Genio-hyoideus 32 

Glands 73 

Gluteus  maximus 36 

Gluteus  medius 36 

Gluteus  minimus 37 

Gracilis 50 

Habits 17 

Hand 92 

Hippocampal  commissure 210 

Hippocampal  fissure 184 

Hippocampal  formation 206 

Hyoglossus 33 

Hyoid 106 

Iliacus 37 

Iliococcygeus 39 


233 


234 


INDEX 


Iliocostalis 29 

Incisors 1 16 

Inf  racoccygeus 39 

Inf  raspmatus 40 

Interossei 46 

Intestines 72 

Ischiococcygeus 39 

Lacrymals 103 

Larynx 77 

Latissimus  dorsi 24 

Leg 93 

Levator  scapulae 24 

Liver 73 

Longissimus 28 

Longissimus  capitis 25 

Longus  colli 27 

Lumbar  vertebrae 84 

Lumbricales 56 

Lungs 76 

Mammae 75 

Mandible 108 

Mandibulo-auricularis 31 

Masseter 30 

Maxillae 102 

Measurements 21 

Molars 102 

Mouth 69 

Muscles  of  the  abdomen 35 

Muscles  of  the  anterior  limb 40 

Muscles  of  the  back 24 

Muscles  of  the  forefoot 46 

Muscles  of  the  head 30 

Muscles  of  the  hind  foot 56 

Muscles  of  the  hind  limb 47 

Muscles  of  the  neck 32 

Muscles  of  the  sacrum 36 

Muscles  of  the  skin 22 

Muscles  of  the  tail 38 

Muscles  of  the  thorax 34 

Mylo-hyoideus 33 

Myrmecoboides 139 

Nasals 101 

Neopallium 180 

Obliquus  capitis  inferior 26 

Obliquus  capitis  superior 26 

Obliquus  externus  abdominis 35 

Obliquus  internus  abdominis 35 

Obturator  externus 38 

Obturator  internus 37 

Occipitals 104 

Oesophagus 71 

Olfactory  areas 189 

Olfactory  bulbs 158-178 

Omo-cleido-transversarius 34 

Omo-hyoideus 33 

Orolestes 168-178 


Palatine 105 

Palmaris  longus 42 

Pancreas 74 

Parietals 103 

Parolfactory  nuclei 199 

Pectineus 48 

Pectoral  girdle 87 

Pectoralis  major 34 

Pectoralis  minor 34 

Pelvic  girdle 88 

Periotic 106 

Peroneus  brevis 52 

Peroneus  longus 53 

Peroneus  tertius 53 

Phylogeny 140 

Plantaris 51 

Popliteus 55 

Premaxillae 102 

Premolars 119 

Pronator  quadratus 44 

Pronator  teres 42 

Psoas  magnus 30 

Psoas  parvus 30 

Pterygoideus  externus 31 

Pterygoideus  internus 31 

Pubococcygeus 39 

Pyriformis 37 

Pyriform  lobe 180-200 

Quadratus  f  emoris 37 

Quadratus  lumborum 29 

Rectus  abdominis 35 

Rectus  capitis  anticus  major 27 

Rectus  capitis  anticus  minor 27 

Rectus  capitis  lateralis 27 

Rectus  capitis  posterior  major 26 

Rectus  capitis  posterior  minor 26 

Rectus  capitis  posterior 

superficialis 26 

Rectus  femoris 49 

Respiratory  System 76 

Retractor  naris 32 

Rhinal  fissure 180 

Rhomboideus 24 

Rhyncholestes 169 

Rhyncholestes  raphanurus. ...  170 
Ribs 86 

Sacral  vertebrae 84 

Sacrococcygeus 39 

Sacrospinalis 29 

Salivary  glands 74 

Sartorius 50 

Scalenus 35 

Semimembranosus 50 

Semispinalis  cervicis 28 

Semitendinous 49 

Septal  region 199 

Serratus  magnus 34 

Serratus  posterior  inferior 25 


INDEX 


235 


Serratus  posterior  superior 25 

Skeleton 77 

Skull 99 

Sphenoid  bones 105 

Spinalis  dorsi 27 

Spino-deltoideus 40 

Spino-trapezius 24 

Spleen 74 

Splenius 25 

Squamosal 103 

Sterno-hyoideus 32 

Sterno-mastoideus 33 

Sterno-thyroideus 32 

Sternum 86 

Stomach 71 

Stria  terminalis 204 

Styloglossus 33 

Subclavius 34 

Subcrureus 49 

Subscapularis 40 

Supinator  (brevis) 45 

Supracostalis 34 

Supraspinatus 40 

Taxonomy 140 

Temporalis 30 

Teres  major 41 

Thigh 93 


Thoracic  vertebrae 82 

Thymus 75 

Thyrohyoideus 33 

Thyroid 75 

Tibialis  anticus 53 

Tibialis  posticus 54 

Tongue 70 

Trachea 77 

Transversus  abdominis 35 

Triceps  brachii 41 

Tuberculum  olfactorium 185,  195 

Turbinals 101 

Tympanic 106 

Urinogenital  System 61 

Vacuities 107 

Vastus  externus 49 

Vastus  internus 49 

Vomer 105 

Wynyardia 136 

Wynyardiidae 138 

Zygomata 103 

Zygomaticus 32 


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